An Optical Clock Based on Coherent Population Trapping of Alkaline-earth Ions
Optics
2009-04-03 v1 Atomic Physics
Abstract
An ultra-stable optical clock based on coherent population trapping effect of alkaline-earth ions, such as Ca, Sr, Ba, is analyzed here. The proposed transitions use the odd isotopes, so that the frequency shift is insensitive to the applied magnetic field. To enhance the signal, a large number of ions are trapped in a linear Paul trap, and laser cooled to crystallize such that the ions are in the Lamb-Dicke regime to avoid first order Doppler shift. Other relevant frequency shifts are also analyzed. Further techniques to improve the stability of the clock signal are discussed.
Keywords
Cite
@article{arxiv.0904.0285,
title = {An Optical Clock Based on Coherent Population Trapping of Alkaline-earth Ions},
author = {Z. H. Lu and L. J. Wang},
journal= {arXiv preprint arXiv:0904.0285},
year = {2009}
}
Comments
12 pages, 2 figures